他们对周围环境漠不关心，昧着良心地破坏了大片环境。

They have no regard for the environment and destroy large areas of the environment with no conscience or regard for their destructive practices.

而我们这种把吸烟美化的行为是昧着良心的.

What we are doing by glomorizing smoking is unconscionable.

我害怕这样的细节会给那些昧着良心要狗的人以可乘之机.

I feared all the detail might encourage an unscrupulous person to claim the dog.